JPS63145577U

JPS63145577U -

Info

Publication number: JPS63145577U
Application number: JP3935087U
Authority: JP
Priority date: 1987-03-18
Filing date: 1987-03-18
Publication date: 1988-09-26

Description

[Brief explanation of the drawing]

第１図〜第３図はこの考案の一実施例によるプ
ラズマアーク肉盛溶接トーチを示す縦断面図、第
４図は同平面図、第５図はこの考案による２重シ
ールドノズルを示す平面図、第６図は第５図のＡ
―Ａ断面図、第７図は第５図のＢ―Ｂ断面図、第
８図〜第１０図は従来のプラズマアーク肉盛溶接
トーチを示す縦断面図、第１１図は従来のトーチ
のシールド範囲を説明する図である。図において、１は電極、２はトーチ本体、３は
拘束ノズル孔、９はチツプ、１１は粉末送給孔、
１２は粉末環状通路、１３は冷却水環状通路、１
５はＯリング、２５はシールドノズル、２６はシ
ールドノズル取付ネジ、５４は円筒、５５はガス
パイプ、５６はガス孔、５７はガスレンズである
。なお、図中、同一符号は同一、又は相当部分を
示す。 Figures 1 to 3 are longitudinal sectional views showing a plasma arc overlay welding torch according to an embodiment of this invention, Figure 4 is a plan view of the same, and Figure 5 is a plan view showing a double shield nozzle according to this invention. , Figure 6 is A of Figure 5.
-A sectional view, Fig. 7 is a BB sectional view in Fig. 5, Figs. 8 to 10 are longitudinal sectional views showing a conventional plasma arc overlay welding torch, and Fig. 11 is a shield of a conventional torch. It is a figure explaining a range. In the figure, 1 is an electrode, 2 is a torch body, 3 is a restricted nozzle hole, 9 is a tip, 11 is a powder feeding hole,
12 is a powder annular passage, 13 is a cooling water annular passage, 1
5 is an O-ring, 25 is a shield nozzle, 26 is a shield nozzle mounting screw, 54 is a cylinder, 55 is a gas pipe, 56 is a gas hole, and 57 is a gas lens. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A torch body with an electrode arranged in the center, a tip detachably provided at the tip of the torch body,
It consists of a shield nozzle that connects to the shield nozzle mounting screw provided on the torch body, and
The above chip has a restraining nozzle hole, a cooling water annular passage, two O-rings disposed on both sides sandwiching this passage, and a powder annular passage and penetrating the tip from this passage at an angle to the tip of the chip, which are constant in the circumferential direction. In a plasma arc overlay welding torch equipped with a series of powder feeds arranged at equal intervals, the cooling water annular passage in the chip is arranged inside the powder feed hole, and a part of the cooling water annular passage is disposed inside the powder feed hole. A cooling water annular passage is provided close to the outer periphery of the restraining nozzle hole, an airtight maintaining member is provided on the outer periphery of the powder annular passage of the tip, and a cooling water annular passage is provided along the inner periphery or outer periphery of the shield nozzle mounting screw of the torch body. Plasma arc overlay welding torch. (2) The shield nozzle is equipped with a cylinder into which a torch is inserted, and has the same length from the center of the cylinder to the left, right, and rear sides in the direction of welding progress, and has a length of 50 mm or more, with the lower end open. A double shield nozzle that is equipped with a gas pipe bent into a U-shape surrounding the gas pipe, a series of gas holes arranged at equal intervals in this gas pipe, and a gas lens made of a porous material below the gas pipe. A plasma arc overlay welding torch according to claim 1, which is characterized by: